package cn.yhr.summerboot.core.util;

/**
 * @Tittle StringCaseUtil
 * @Description
 * @Author yhr
 * @Date 2018/11/27 10:50
 * @Version 1.0
 */
public final class StringCaseUtil {

    /**
     * 首字母小写
     * @param oldStr
     * @return
     */
    public static String lowerFirst(String oldStr){
        char[]chars = oldStr.toCharArray();
        chars[0] += 32;
        return String.valueOf(chars);
    }
}
